Pfizer CEO ‘not certain’ if their vaccine will prevent transmission

On December 3, 2020, just one day after the UK became the first country to grant emergency use authorisation for Pfizer-BioNTech’s COVID-19 vaccine, it was reported that Pfizer’s CEO Albert Bourla said in an interview with NBC that the company is “not certain” if their vaccine will prevent transmission, “I think this is something that needs to be examined” he said. [1, 2]